<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card>
        <el-row :gutter="20">
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
            </el-col>
        </el-row>

        <el-table :data="userList" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="姓名" prop="username" width="150"></el-table-column>
            <el-table-column label="邮箱" prop="email" width="180"></el-table-column>
            <el-table-column label="电话" prop="mobile" width="180"></el-table-column>
            <el-table-column label="角色" prop="role_name" width="180"></el-table-column>
            <el-table-column label="状态" width="100">
                <template v-slot="scope">
                    <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作">
                <template v-slot="scope">
                    <el-tooltip effect="dark" content="修改用户" placement="top" :enterable="false">
                        <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"></el-button>
                    </el-tooltip>
                    <el-tooltip effect="dark" content="删除用户" placement="top" :enterable="false">
                        <el-button type="danger" size="mini" icon="el-icon-delete" @click="deleteUserByID(scope.row.id)"></el-button>
                    </el-tooltip>
                    <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                        <el-button type="warning" size="mini" icon="el-icon-setting" @click="setRole(scope.row)"></el-button>
                    </el-tooltip>
                </template>
            </el-table-column>
        </el-table>

        <el-pagination 
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose">
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUser">确 定</el-button>
        </span>
    </el-dialog>

    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClose">
        <div>
            <p>当前的用户：{{userInfo.username}}</p>
            <p>用户的角色：{{userInfo.role_name}}</p>
            <p>分配新角色：
                <el-select v-model="selectedRoleID" placeholder="请选择">
                    <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
                    </el-option>
                </el-select>
            </p>
        </div>
        <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Users',
  data(){
      var checkEmail = (rule,value,callback)=>{
          const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
          if (regEmail.test(value)) {
              return callback()
          }
          callback(new Error('请输入合法的邮箱'))
      }

      var checkMobile = (rule,value,callback)=>{
          const regMobile = /^(0|86|17851)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
          if (regMobile.test(value)) {
              return callback()
          }
          callback(new Error('请输入合法的手机号'))
      }
      return {
            queryInfo:{
                query:'',
                pagenum:1,
                pagesize:2
            },
            userList:[],
            total:0,
            addDialogVisible:false,
            addForm:{},
            addFormRules:{
                username:[
                    {required:true,message:'请输入用户名',trigger:'blur'},
                    {min:3,max:10,message:'用户名的长度在3~10个字符之间',trigger:'blur'}
                ],
                password:[
                    {required:true,message:'请输入密码',trigger:'blur'},
                    {min:6,max:15,message:'密码的长度在6~15个字符之间',trigger:'blur'}
                ],
                email:[
                    {required:true,message:'请输入邮箱',trigger:'blur'},
                    {validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                    {required:true,message:'请输入手机',trigger:'blur'},
                    {validator:checkMobile,trigger:'blur'}
                ]
            },
            editDialogVisible:false,
            editForm:{},
            editFormRules:{
                email:[
                    {required:true,message:'请输入邮箱',trigger:'blur'},
                    {validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                    {required:true,message:'请输入手机',trigger:'blur'},
                    {validator:checkMobile,trigger:'blur'}
                ]
            },
            setRoleDialogVisible:false,
            userInfo:{},
            rolesList:[],
            selectedRoleID:''
      }
  },
  created(){
      this.getUserList()
  },
  methods:{
    async getUserList(){
        const {data:res} = await this.$http.get('users',{params:this.queryInfo})
        if (res.meta.status !== 200) {
            return this.$message.error('用户列表获取失败')
        }
        this.userList = res.data.users
        this.total = res.data.total
    },
    handleSizeChange(newSize){
        this.queryInfo.pagesize = newSize
        this.getUserList()
    },
    handleCurrentChange(newPage){
        this.queryInfo.pagenum= newPage
        this.getUserList()
    },
    async userStateChange(userInfo){
        const {data:res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
        if (res.meta.status !== 200) {
            userInfo.msg_state = !userInfo.msg_state
            return this.$message.error('更新用户状态失败')
        }
        this.$message.success('更新用户状态成功')
    },
    addDialogClose(){
        this.$refs.addFormRef.resetFields()
    },
    addUser(){
        this.$refs.addFormRef.validate(async valid =>{
            if (!valid) {
                return
            }
            const {data:res} = await this.$http.post('users',this.addForm)
            if (res.meta.status !== 201) {
                return this.$message.error('添加用户失败')
            }
            this.$message.success('添加用户成功')
            this.addDialogVisible = false
            this.getUserList()
        })
    },
    async showEditDialog(userID){
        const {data:res} = await this.$http.get(`users/${userID}`)
        if (res.meta.status !== 200) {
            return this.$message.error('用户数据获取失败')
        }
        this.editForm = res.data
        this.editDialogVisible = true
    },
    editDialogClosed(){
        this.$refs.editFormRef.resetFields()
    },
    editUser(){
        this.$refs.editFormRef.validate(async valid =>{
            if (!valid) {
                return
            }
            const {data:res} = await this.$http.put(`users/${this.editForm.id}`,{email:this.editForm.email,mobile:this.editForm.mobile})
            if (res.meta.status !== 200) {
                return this.$message.error('修改用户失败')
            } 
            this.editDialogVisible = false
            this.getUserList()
            this.$message.success('修改用户成功')
        })
    },
    async deleteUserByID(userID){
        const res  = await this.$confirm('确认要删除该用户吗？', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
        }).catch(err => err)
        if (res !== 'confirm') {
            return
        }
        const {data:deleteRes} = await this.$http.delete(`users/${userID}`)
        if (deleteRes.meta.status !== 200) {
            return this.$message.error('用户删除失败')
        }
        this.getUserList()
        this.$message.success('用户删除成功')
    },
    async setRole(userInfo){
        this.userInfo = userInfo
        // 展示对话框之前获取所有角色的列表
        const {data:res} = await this.$http.get(`roles`)
        if (res.meta.status !== 200) {
            return this.$message.error('角色获取失败')
        }
        this.rolesList = res.data
        this.setRoleDialogVisible = true
    },
    async saveRoleInfo(){
        if (!this.selectedRoleID) {
            return this.$message.warning('请选择要分配的角色')
        }
        const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleID})
        if (res.meta.status !== 200) {
            return this.$message.error(res.meta.msg) 
        }
        this.$message.success('更新角色成功')
        this.getUserList()
        this.setRoleDialogVisible = false
    },
    setRoleDialogClose(){
        this.selectedRoleID = ''
        this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
</style>